遮挡环境中的群体追逃行为研究

Group chase and escape in sheltered environment

基于多主体建模的方法建立遮挡环境中的群体追逃模型,讨论遮挡环境对群体追逃行为的影响.遮挡环境改变了个体可获取的信息量,追捕者和目标可以隐藏其中而不被发现.研究表明,当捕食者数量小于或等于被捕食者数量时,相比于无遮挡情况,遮挡环境不利于被捕食者的存活;当捕食者数量远大于被捕食者时,遮挡环境可使被捕食者存活更久,并且随着空间中遮挡物密度的增大,被捕食者生存时间增加.

A model of group chase and escape in sheltered environment is introduced to study impacts of sheltered environment on group chase and escape behavior.Shelters change accessible information for both chasers and targets so they can hide in shelters to avoid being found.Simulation results show that sheltered environment is not favorable for targets survival if the number of chasers is less than or equal to the number of targets.Sheltered environment can make targets survive longer if the number of chasers is far more than the number of targets,the survival time of targets increase with the density of shelters.